Thrust-bearing.



(L JUNGGREN.

THRUST BEARING.

APPLIGATLON FILED sBPT.13,1907.

96391556, l Patented July 5,1910.

Hail- [15E/@m JUANGGHEN.

' OSCAR JUNGGR'EN, OF SCHENECTADY, NEW YORK, ASSIGNOR 'lO GENERAL ELECTRIC COMPANY, A CORPORATION vOIE" NEW YORK.

'rHRUsT-BEARING.

Patented July 5,1910. f

Application led September-.13, 19072 Serial 110.392,610.

Toall whom it may concern:

Be it known that I, OscA'R JUNcGRnN, a`

citizen of the United States,y residing at Schenectady, county of Schenectady, State of New York, have invented certain new' and useful Improvements in Thrust-Bearings, of which the following isl a specification.

n The present invention relates to thrust bearings, and more particularly to those intended to limit the endwise movement of horizontal shafts in elastic fluid turbines,

and has for its object to provide a thrust y bearing of improved' construction which shall be elfectiveand reliable in operation. In the accompanying drawing, which represents one of the embodiments of my invention, Figure 1 is a longitudinal section of a turbine shaft with itsmain and thrust bearings; Fig. 2 isa perspective View' of the thrust member carried by the/ shaft; Fig. `3 is a detail view, partly inl section, of one of the roller thrustbearings; and Fig. 4 is a section taken on the line 4 4 of Fig.` 1 with the thrust member and -it's associated parts on the end of the shaft omitted.

1 indicates'the main shaft, which is `supported vby upper and lower bearing blocks 2 'carried by the pillow-block 3. The blocks are provided with a lining 4 of Babbitt or lother suitable-material. It will be noted ance around the shaft by the oil-throwing device 8, comprising parallel projections 9, one of which enters a groove in the pillowblock extending 7perpendicularly to the shaft, and the other of which extendsperpendicularly to the shaft'just inside pf the w'all of the chamber. On one end of the shaft is a worm 10 meshing with a wheel on the governor shaft (not shown) whoseaxle is perpendicular to that ,ofthe mainI shaft. Surrcunding the worm is a casing 11 which is directly bolted to the pillow-block. When the governor shaft is driven .by some other means, the worm 10 and the casing 11 ,may be omitted. The worm is held on the shaft by a nut :12, which nut is provided with a screw 13 to hold the flanged part 14, forming the thrust member, in'place.

-Surrounding the thrust member is an annulus 15 that makes a sliding fit with the borel of the casing 16. This annulus is pre- `vented from turning by the spline 17, the

latter moving'in a groove formed in the casing 16. The annulus is provided with a shoulder 18 on which is seated a hard steel ring .or washer 19. The thrust member is similarly provided with a shoulder and a hardened.

steel ring 20. 4Between the rings is a carrier 21 containing a plurality of radially disposed rollers 22. The left-hand end of the annulus is threaded internally to receive a nut 23, the latter being provided with a shoulder to receive the hardened steelv ring 24. The adjacent side of the thrust member is also lprovided with 'a shoulder to receive a hardened steel ring' 25, and between the rings or washers is acarrier containingv a pluralityY of rollers, similar to that shown in Fig. 3. It will thus be seen that the thrust of the shaft in one 4direction is taken care of by one set of rollers, and that in the opposite direction by the .second set of rollers. The annulus and the nut are moved longiutudinallywith. the shaft by the adjusting 1 -screw 26, which is secured to the casing against longitudinalmovement but is free to turn.` Owing to the fact that the nut is threaded to theV annulus', any change in its position with respect to the latter will increase or decrease the clearance betweenjthe rollers and the thrust member, while any adjustment of the screw 26'will shiftthe shaft r1 bodily in one direction or the other, de-y pending upon -the direction of rotation of the screw. v I, v

When the Worm and its casing are omitted, lthe casing of the thrust 'bearing can be mounted directly on the pillowfblock.

Since the thrust bearings. are located at' fthe end of the machine,they are readily accessible, and the parts can. be taken down er assembled without in any way interfering with the turbine or other apparatus connected to the main shaft. Since the interiors of the casings 11 'and 16 are in communication with the oil chamber surrounding the main-'bearing,it follows that' the parts will be well lubricated, and this withvpat/ent statutes, I have described the out any special attention on the part of the attendant.' By measuring the dlstanc'e between some portion of the shaft and the villow-bloclz 3, the attendant can readily etermine whether or not vthe shaft is runnin in its proper position, and if noot, can eas' y adjust it by rotating the adjusting screw 26, and this without opening or in any 4way interfering with the remaining portions of the apparatus. v J In accordance with the provisions of the principle .of operation of my invention, together with the apparatus which Iy now consider to represent lthe bestembodiment thereof;` but I desire to have it understood that the apparatus shown is only illustrative and that the invention can be carried out by other means.

What I claim as new, and desire to secure by Letters Patent of the United States, is,-'

l1. In combination, a shaft, a thrust mem- .ber attached thereto, an annulus inclosing said member provided with a thrust receiving surface, a nut threaded to the annulus and provided with a thrust, receiving surface, anti-friction devices between said member and said surfaces, a cylindrical casing in Awhich the annulus is slidably mounted for axial movement, a s lined connection between the casing an the annulus, and a screw-threaded means for moving the nut and annulus axially to adjust the position of the shaft in either direction and to maintain said adjustment. u

2. In combination, a shaft, a thrust member having a flange thereon and secured to the end of the shaft, an annulus whichv is rovided with a thrust receiving surface ocated at one side of the said liange, and a screw-thread on the other, a nut threaded toJ .theann'ulus which is provided with a thrustreceiving surface, a cylindrical casing in which the annulus and nut are Islidably mounted for axial movement, a splined connection between the casing and the annulus and an axially d1s osed screw whlch 1s threaded to the nut or-adjusting it and the ing, thrust bearings located on opposite sides of said member and between it and. the nut and annulus, and an adjusting serew which is held against longitudinal movement in the casing and is threaded into the nut for moving it and the annulus longitudinally.

4. In combination', a shaft, a bearing therefor, a pillow-blockl for the bearing, a thrust member xed to the end of the shaftbeyond the bearing, a cylindrical casing for said member which is attached to the pillowblock, an annulus and a nut which embrace f the thrust member 'and are slidably mounted in the casing, a splined connection between the annulus and the casing, rollers between s aid member and the annulusand the nut,

and a screw threadedv into the nut for moving said rollers axially shaft.

In witness whereof, I have hereunto set my hand this 11th day of September, 1907..

OSCAR .TUNGGREN and with them the Witnesses:

BENJAMIN B. HULL, MARGARET E. WooLLnY. 

